[INFO] fetching crate concurrent-utils 0.1.0...
[INFO] checking concurrent-utils-0.1.0 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate concurrent-utils 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate concurrent-utils 0.1.0 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concurrent-utils 0.1.0
[INFO] finished tweaking crates.io crate concurrent-utils 0.1.0
[INFO] tweaked toml for crates.io crate concurrent-utils 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f78b32a6421de9d2fc6a40c13767f13ad98cf7f37d85182f095acd03b4575b2f
[INFO] running `Command { std: "docker" "start" "-a" "f78b32a6421de9d2fc6a40c13767f13ad98cf7f37d85182f095acd03b4575b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f78b32a6421de9d2fc6a40c13767f13ad98cf7f37d85182f095acd03b4575b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f78b32a6421de9d2fc6a40c13767f13ad98cf7f37d85182f095acd03b4575b2f", kill_on_drop: false }`
[INFO] [stdout] f78b32a6421de9d2fc6a40c13767f13ad98cf7f37d85182f095acd03b4575b2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a00fc2f232eb7c58e1573673cd141f99edb27e100aef2a9a817cd1862c2abf0
[INFO] running `Command { std: "docker" "start" "-a" "6a00fc2f232eb7c58e1573673cd141f99edb27e100aef2a9a817cd1862c2abf0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking concurrent-utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "6a00fc2f232eb7c58e1573673cd141f99edb27e100aef2a9a817cd1862c2abf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a00fc2f232eb7c58e1573673cd141f99edb27e100aef2a9a817cd1862c2abf0", kill_on_drop: false }`
[INFO] [stdout] 6a00fc2f232eb7c58e1573673cd141f99edb27e100aef2a9a817cd1862c2abf0